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U. RENNER, Jr.

Thill Coupling.

Patented July 6, 1880.

\X/ lsggEg I gym/W 47V%VM N-PEIERS. FHOTO-LITHOGRAPHEH. WASHINGTON D C UNITED STATES PATENT OFFICE.

CHRIST RENNER, JR, OF INDIANAPOLIS, INDIANA.

THlLL-COUPLING.

SPECIFICATION forming part of Letters Patent No. 229,555, dated July 6, 1880. Application filed February 27, 1880.

To all whom it may concern:

Be it known that I, CHRIST RENNER, J12, of Indianapolis, in the county of Marion and State of Indiana, have invented a new and useful Device for Taking Up Lost Motion and Preventing the Battling of Thill Irons, of which the following is a specification.

My invention relates to improvements in thill-irpns, in which a plate for holding a rubber spring is swiveled to a screw-threaded stud having a head which operates in conjunction with the clip, the thill-iron, and locknut; and the objects of my improvement are, first, to afford facilities for the proper adj ustment of the rubber spring against the shaftiron to prevent rattling; second, to take up lost motion between the shaft-iron and coupling-bolt, also between the coupling-bolt and clip-iron.

I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a perspective view of the entire device. Fig. 2 is a sectional view of the same; and Fig. 3 is a detail view, in perspective, of the adjusting mechanism.

The clip A is provided with screw-threaded studs B B and across-bar, O, to secure the clip to an axle in the usual manner. The clip also has forward projecting lugs D D, between which the shaft-iron J is secured, also in the usual manner; but the lugs D'D project more in front than those on ordinary clips, and the upper portion (marked E E) of each is curved or hollowed out to allow more room for working the adjustable device located between them.

The adjustable mechanism consists of a screw-stud, L, with head F, on which the lock-nut F operates. The front end of'the screw L is turned down and fitted loosely in a hole formed in the block G, forminga swiveljoint, as shown at m in Fig. 3.

The rear end of the screw-threaded stud L operates in a screw-threaded hole formed in the front part, A, of the clip A, between the forward-projecting lugs D D, so that when the stud L is revolved, as in the act of unscrewing it from the hole in the clip, the

block G is adjusted forward, and when the stud is revolved, as in the act of screwing it up, then the block G is adjusted back, the nut F acting as a lock-nut to hold the stud L in position when adjusted.

H represents a rubber cushion located be tween the block G and that part of the shaftiron J in which the bolt K is inserted.

The adjusting device, consisting of the screw-threaded stud L, with head F, locknut F, and swiveled block G, is first inserted between the lugs D D. The stud L is then screwed home in the screwthreaded hole formed in the clip. The rubber, cushion H is then placed between the flanges at a of the block G. The shaft-iron J is then inserted between the jaws D D and secured by the bolt K. Should the bolt K or holes in which it is inserted become worn, all lost motion can be taken up by placing a wrench on the head F and unscrewing the stud L, which forces the rubber cushion tightly against the shaft-iron.

When the stud L has been adjusted suffieiently to prevent rattling and take up anylost motion, it is then secured in position by the lock-nut F, which is screwed back so as to jamb against the face of the clip.

I am aware that prior to my invention thill-irons have been made with clips and projecting lugs, operating in conjunction with a shaft-iron, a bolt, and a rubber cushion. I therefore do not claim such a combination, broadly; but

What I do claim as my invention, and desire to secure by Letters Patent, is-- 1. In a thill-coupling, theadjustable device consisting of the screw-threaded stud L, provided with lock-nut F and head F, having one end swiveled to the block G and its other end operating in a screw-threaded hole formed in one side of the clip A, between the lugs D D, substantially as specified.

2. In a thill-coupling, the combination of the clip A, having forward-projecting lugs D D, curved or hollowed out on their upper edges, as at E, and provided with a screwthreaded hole in the part A, between the lugs D D, the screw-threaded stud L, with head F and lock-nut F, the swiveled block G, the rub- In testimony whereof I have signed my name ber cushion H, the shaft-iron J, and bolt K, as to this specification in the presence of two suband for the purpose specified. scribing witnesses.

3. In a thin-coupling, the combination, in CHRIST RENNER, JR. 5 the adjusting device, of the screw-threaded Witnesses:

stud L with head F, the swiveled block G, and E. 0. FRINK,

lock-nut F, as and for the purpose specified. G. H. BENNETT. 

